Initializerswift 6.0.1Swift

    init(exactly:)

    Creates a new instance initialized to the given value, if it can be represented without rounding.

    iOS
    14.0+
    macOS
    11.0+
    tvOS
    14.0+
    watchOS
    7.0+
    init?(exactly other: Double)
    Mangled symbol

    ss7Float16V7exactlyABSgSd_tcfcWhat are these?

    FNV24: [4HYR3]

    Parameters

    other

    The value to use for the new instance.

    If other can’t be represented as an instance of Float16 without rounding, the result of this initializer is nil. In particular, passing NaN as other always results in nil.

    let x: Double = 21.25
let y = Float16(exactly: x)
// y == Optional.some(21.25)

let z = Float16(exactly: Double.nan)
// z == nil

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